美国空气污染率在下降,但不平等现象依然存在
我们的最新研究表明,在减少空气污染排放方面存在种族/民族和社会经济差异,特别是在工业和能源生产部门。这些发现提供了一项对《清洁空气法案》(CAA)颁布后40年间空气污染排放变化的全国性调查。到目前为止,研究主要集中在评估单个时间点的空气污染差异,关注污染物浓度而不是排放量。然而,关注排放对监管和政策有更直接的影响。在这项研究中,研究人员使用县级数据评估了1970年至2010年美国相邻地区空气污染排放变化的种族/民族和社会经济差异。
阅读全文地球与气候栏目关注地球科学研究与全球气候变化,报道生态环境与可持续发展前沿资讯。
我们的最新研究表明,在减少空气污染排放方面存在种族/民族和社会经济差异,特别是在工业和能源生产部门。这些发现提供了一项对《清洁空气法案》(CAA)颁布后40年间空气污染排放变化的全国性调查。到目前为止,研究主要集中在评估单个时间点的空气污染差异,关注污染物浓度而不是排放量。然而,关注排放对监管和政策有更直接的影响。在这项研究中,研究人员使用县级数据评估了1970年至2010年美国相邻地区空气污染排放变化的种族/民族和社会经济差异。
阅读全文气候变暖并没有导致世界干旱和半干旱地区大气湿度的预期增加。这一发现令科学家感到惊讶,表明一些地区可能比预计的更容易受到未来野火和极端高温的影响。
阅读全文研究人员开发了一种材料,可以从水中去除尿素,并有可能将其转化为氢气。通过构建这些具有精心定制的电子结构的镍和钴原子材料,该小组释放了这些过渡金属氧化物和氢氧化物在电化学反应中选择性氧化尿素的潜力。该团队的发现有助于利用废物流中的尿素通过电解过程高效生产氢燃料,并可用于从水中分离尿素,保持生态系统的长期可持续性,并彻底改变水-能源关系。
阅读全文Social distancing when sick has become second nature to many of us in the past few years, but some sick animals appear to take a different approach. A new study of house finches led by Marissa Langager, a Ph.D. student in the Department of Biological Scie
阅读全文City lights shine all night amid the bustling traffic, businesses and neighborhoods of Southern California, one of the most populated areas that mountain lions call home.
阅读全文A groundbreaking discovery has been made in the heart of the world-renowned Great Barrier Reef and unique reefs systems of the Coral Sea and Lord Howe Island, leading to a greater understanding of how the world heritage-listed landmark is protected.
阅读全文The University of Córdoba is participating in the creation of the first database that harmonizes the recording of disturbances caused by insects and diseases in forests in 8 European countries by combining remote sensing, satellite images and field
阅读全文Scientists have run the first proof of concept of their DNA 'time machine' to shed light on a century of environmental change in a freshwater lake -- including warming temperatures and pollution, leading to the potentially irreversible loss of biodivers
阅读全文Scientists have unlocked the genetic basis underlying the remarkable variation in body size observed in song sparrows, one of North America's most familiar and beloved songbirds. This discovery also provides insights into this species' capacity to adapt
阅读全文Biochar, a charcoal made from heating discarded organic materials such as crop residues, offers a path to lowering atmospheric carbon dioxide (CO2). New maps, made from a first-of-its-kind high-resolution global dataset of crop residues, reveal
阅读全文When animals ‘sing’ sitting on the ground— such as when crickets chirp— their volume and reach increase dramatically, by as much as ten-fold. This result from a study by Western researchers, 阅读全文
A ground-breaking new study by RMIT has found carbon emissions from Australian alpine peatlands to be much higher in areas disturbed by feral horses.
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